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	Novel non-Pt electrocatalysts for oxygen reduction reaction
	Zhong HX(钟和香) ; Zhang HM(张华民) ; Wang MR(王美日)
	2009-10-18
会议名称	international symposium on novel materials and their synthesis 19th international symposium on fine chemistry and functional polymers
会议日期	2009-10-18
会议地点	中国
页码	c48/2
通讯作者	张华民
中文摘要	fuel cells are electrochemical devices that continuously convert chemical energy of externally supplied fuel and oxidant directly to electrical energy by electrochemical reactions with high efficiency and low emission of pollutants. proton exchange membrane fuel cells (pemfcs) have been recognized as a potential future power source for zero-emission vehicles among different types of fuel cells under development today. however, to become commercially viable, pemfcs have to overcome the barrier of high catalyst cost caused by the exclusive use of expensive and precious platinum and platinum-based catalysts in the fuel-cell electrodes. here we demonstrate a novel class of low-cost nanocatalysts for the pemfc cathode to substitute for the pt-based catalyst. the catalysts are characterized by x-ray diffraction (xrd), transmission electron microscopy (tem), high-resolution transmission electron microscopy (hrtem), and icp. moreover, the activities are investigated by the electrochemical measurements. the results show the catalysts present samll particles, about 3-4 nm and they are mostly dispersed uniformly. the catalysts show high activity toward orr in pemfcs, which almost reach 50% that of tanaka commercial 47.6%pt/c catalyst. thus, this category of catalysts brought a prospect future for the final commercialization of pemfcs.
会议主办者	复旦大学
学科主题	物理化学
语种	中文
内容类型	会议论文
源URL	[http://159.226.238.44/handle/321008/113706]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
推荐引用方式 GB/T 7714	Zhong HX,Zhang HM,Wang MR. Novel non-Pt electrocatalysts for oxygen reduction reaction[C]. 见:international symposium on novel materials and their synthesis 19th international symposium on fine chemistry and functional polymers. 中国. 2009-10-18.

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